Aches and pains

I've had a very smooth pregnancy (save for the anxiety, anyway) and between weeks 6-8 I had aches and pains which I assumed were the stretching ligaments. That turned out to be pain related to the UTI I had. I just went back to the doctor at 10w6d last Thursday, saw a healthy baby and heard the heartbeat, and it's measuring a week ahead (it was 12 wks-sized, apparently!). Just within the last couple days I've had stronger aches and pains down there. I wouldn't call it a cramp, just erratic pains that come and go and have varying degrees of strength. Some are sharper than others. I have never spotted, I just have the normal extra discharge common in pregnancy.

I think I'm just paranoid because of the timing--having seen a healthy baby and then I start hurting--but I just wondered if anyone else's aches and pains (ligament stretching pains) seemed to start just as suddenly?